Air-regulating attachment.



O. KIESSIG.

AIR REGULATING ATTACHMENT.

APPLICATION FILED APR.30, 191B.

1 @Ul A55, Patented A111. 22, 1919.

W171 'ESSES:

-V ATTORNEY.

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morass.

To all whom it may concern:

Be it known that. I, OSCAR Kmssre, a citizen of the United States,residing at Dallas,

in the county of 'Dallas and State of Texas,

have invented certain new and useful Improvements in Air-RegulatingAttachments,

I of whichthe-following is a specification.

This invention relates to" new and useful improvementsin air regulatingattachments for carburetors.

Some types of carbureters have an air in-- let which is controlled onlyby a valve which is mechanically operated in unison with a throttlevalve. The suction created by the engine has no edect upon the airsupply and there is no corresponding control of the air supply exceptthatwhich is had by a mechanical adjustment of the air valve.

Various attachments have been made which provide a valve in addition tothe usual air valve and which is operated by the suction created by theengine. These attachments' have been more or less complicated orpossessed of objectionable features. The 'urpose of this invention istocombine all; t e good points of the devices which have gone before andproduce a device which will be simple in' construction and inexpensiveto manufacture.

In carrying o t the invention a sleeve or housing is provi ed andconstructed to be mounted at the air inlet of the carburetor.

This sleeve is provided with a hinged valve normally closing the sleevetransversely and held in this position under light spring tension. Thevalve is mounted on a transverse shaft and is rovided with an armconnected with a CQllGi spring in such a way that the valve ma swing. inopposite directions. The valve being swung inward by the suction createdby the engine and permitted to liih heating pipe attachedand equippedwith an Specification of Letters Patent.

Application filed April 30, 1918. Serial No. 231,701.

Figure 1 is a view of a carburetor with a earns raranr orrioa.

iPatented apnea, rare.

attachment constructed in accordance with this invention, a

Fig. 2 is a longitudinal sectional view of the attachment, and Fig. 3 isa transverse sectional view on the line 33 of Fi 1. 5

In the drawings t e numeral 1 designates a carbureter having an airinlet 2. At the air inlet a hot air pipe 3 is connected in the usualmanner.

llhe invention includes an attachment in the form of a sleeve or housing4 having its outer end 5 flared. This sleeve fits snugly in the lowerend of the pipe 3, the flared end 5 limiting its insertion by engagingwith the edge of the pipe as shown.

At the inner end of the sleeve a disk valve 6 is transverselyhinged on ashaft 7 havin its ends secured in the sleeve. The valve is provided witha pair of upset ears 8 throu h which the shaft passes and whereby t evalve is mounted on the shaft. The shaft extends across the lowerportion of the valve which has the greater portion of its area abovesaid shaft.

From the lower end and center of the valve an arm 9 is bent upward at anacute angle to the valve and terminates 1n an outwardly bent eye 10which is substantially at the same elevation as the shaft 7. One end ofa light coiled spring 11 is engaged in the eyeand the other end isattached to a lug 12 at the portion 5 of the sleeve.

By observing Fig. 2 it will be seen that the tension of the spring isexerted so as to hold the valve substantially balanced and transverselyof the sleeve. However, as indicated by the dotted lines the valve maybe swung in either direction. en it is swung into the sleeve under the'infiuence'of the suction created by the engine the arm 9 is swungdownward and the spring 11 eatended so that as soon as the suction isrelieved the spring swings the valve back to its normal position. Shouldthe engine back fire the back pressure created will strike the valve 6and swing it outward whereby the arm 9, eye and ears 8 are all formed upfrom the plate which forms the valve. The shaft and the spring are theonly other parts which are placed in the sleeve. One of the featureswhichreduces the cost of manufacture is the factthat the valve does nothave to be adjusted after the attachment is assembled. There is but onespring and it may vary in tension without afiecting the normaladjustment of the valve. Where two springs are used it is evident theymust be adjusted in harmony.

What I claim; is,

1. In an air regulating attachment for carbureters, a sleeve adapted tobe mounted at the air inlet of a carbureter, a disk valve hingedtransversely of the sleeve, said valve having a transverse axis, and acoiled spring Lsomes mounted within the sleeve and having, one endattaehed'to the sleeve and the other end attached to the valve atsubstantially the same elevation as that of the transverse axle.

2. In an air regulating attachment for carbureters, a sleeve adapted tobe mounted at the air inlet of a carbureter, a disk valve, a transverseshaft mounted in the sleeve and on which the valve is mounted, an armbent upward from the valve below the shaft and having its upper endterminating adjacent the shaft, a coiled spring within the sleeve havingone end attached thereto and the other end attached to the upper end ofsaid am In testimony whereof ll afix my signature.

QSCAR KIESSIG.

